Which statement about radiation protection barriers in radiography rooms is true?

The statement that radiation protection barriers can be composed of materials equivalent to lead is accurate because in radiography, barrier materials are often designed to reduce radiation exposure effectively, while not necessarily being made solely of lead. Various materials such as concrete, brick, and specialized composite materials can provide equivalent protection against radiation; these alternatives can be more practical and cost-effective than solid lead.

Using materials that have similar density and atomic composition can achieve adequate attenuation of the radiation, ensuring safety standards are met without the added weight and handling considerations of lead. This understanding allows for flexibility in design and construction while maintaining compliance with safety regulations in a radiography environment.